/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements. See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.inlong.audit.entity;

import com.google.gson.Gson;
import lombok.Data;

import java.lang.reflect.ParameterizedType;
import java.lang.reflect.Type;
import java.util.List;

/**
 * Class representing a common response.
 */
@Data
public class CommonResponse<T> {

    /**
     * Gson instance for JSON serialization and deserialization.
     */
    private static final Gson gson = new Gson();

    /**
     * Error message of the response.
     */
    private String errMsg;

    /**
     * Success status of the response.
     */
    private boolean success;

    /**
     * Data of the response.
     */
    private List<T> data;

    /**
     * Converts a JSON string to a CommonResponse object.
     *
     * @param json the JSON string
     * @param clazz the class of the data
     * @return a CommonResponse object
     */
    public static CommonResponse fromJson(String json, Class clazz) {
        Type objectType = type(CommonResponse.class, clazz);
        return gson.fromJson(json, objectType);
    }

    /**
     * Returns a parameterized type.
     *
     * @param raw the raw type
     * @param args the actual type arguments
     * @return a parameterized type
     */
    private static ParameterizedType type(final Class raw, final Type... args) {
        return new ParameterizedType() {

            @Override
            public Type getRawType() {
                return raw;
            }

            @Override
            public Type[] getActualTypeArguments() {
                return args;
            }

            @Override
            public Type getOwnerType() {
                return null;
            }
        };
    }
}
